CVE-2016-9179: lynx Improper Input Validation
Vulnerability summary
CVE-2016-9179 is a high (CVSS 7.5) Improper Input Validation vulnerability in lynx. EPSS estimates a 2.00% chance of exploitation in the next 30 days, higher than 80.8% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 4Timeline
- 22-12-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
lynx: It was found that Lynx doesn't parse the authority component of the URL correctly when the host name part ends with '?', and could instead be tricked into connecting to a different host.
CVSS metrics
6 scores · 5 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · WolfiEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · ChainguardEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
2.00%
Chance of exploitation in the next 30 days
Percentile
81%
Versus all other CVEs
30-day change
Increase +0.02 pp
From 1.99% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Chainguard3 products
- lynxAll versions (No fix recorded)
- lynx-docAll versions (No fix recorded)
- lynx-langAll versions (No fix recorded)
Wolfi3 products
- lynxAll versions (No fix recorded)
- lynx-docAll versions (No fix recorded)
- lynx-langAll versions (No fix recorded)
Debian2 products
- lynx< 2.8.9dev11-1
- lynx-cur< 2.8.8dev.12-2+deb7u1
Mageia1 product
- lynx< 2.8.8-1.rel2.3.1.mga5
Suse1 product
- lynx&distro=SUSE Linux Enterprise Software Development Kit 11 SP4< 2.8.6-145.1
Ubuntu1 product
- lynx< 2.8.9dev8-4ubuntu1+esm1
6 vendors · 11 products
References
14 links- www.openwall.com/lists/oss-security/2016/11/04/1Mailing ListX Refsource MLISTThird Party AdvisoryAdvisoryARTICLE